mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-09-17 11:54:50 +02:00
389 lines
10 KiB
C
389 lines
10 KiB
C
/*****************************************************************************
|
|
* font.c
|
|
*
|
|
* IPL font engine (using GX rendering)
|
|
*
|
|
* Copyright Eke-Eke (2009-2010)
|
|
*
|
|
* Redistribution and use of this code or any derivative works are permitted
|
|
* provided that the following conditions are met:
|
|
*
|
|
* - Redistributions may not be sold, nor may they be used in a commercial
|
|
* product or activity.
|
|
*
|
|
* - Redistributions that are modified from the original source must include the
|
|
* complete source code, including the source code for all components used by a
|
|
* binary built from the modified sources. However, as a special exception, the
|
|
* source code distributed need not include anything that is normally distributed
|
|
* (in either source or binary form) with the major components (compiler, kernel,
|
|
* and so on) of the operating system on which the executable runs, unless that
|
|
* component itself accompanies the executable.
|
|
*
|
|
* - Redistributions must reproduce the above copyright notice, this list of
|
|
* conditions and the following disclaimer in the documentation and/or other
|
|
* materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************************/
|
|
|
|
#include "shared.h"
|
|
#include "font.h"
|
|
|
|
#define _SHIFTR(v, s, w) \
|
|
((u32)(((u32)(v) >> (s)) & ((0x01 << (w)) - 1)))
|
|
|
|
typedef struct _yay0header {
|
|
unsigned int id ATTRIBUTE_PACKED;
|
|
unsigned int dec_size ATTRIBUTE_PACKED;
|
|
unsigned int links_offset ATTRIBUTE_PACKED;
|
|
unsigned int chunks_offset ATTRIBUTE_PACKED;
|
|
} yay0header;
|
|
|
|
u8 font_size[256];
|
|
int fheight;
|
|
|
|
static u8 *fontImage;
|
|
static u8 *fontTexture;
|
|
static void *ipl_fontarea;
|
|
static sys_fontheader *fontHeader;
|
|
|
|
|
|
#ifndef HW_RVL
|
|
|
|
/* disable Qoob Modchip before IPL access (emukiddid) */
|
|
static void ipl_set_config(unsigned char c)
|
|
{
|
|
volatile unsigned long* exi = (volatile unsigned long*)0xCC006800;
|
|
unsigned long val,addr;
|
|
addr=0xc0000000;
|
|
val = c << 24;
|
|
exi[0] = ((((exi[0]) & 0x405) | 256) | 48); //select IPL
|
|
//write addr of IPL
|
|
exi[0 * 5 + 4] = addr;
|
|
exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
|
|
while (exi[0 * 5 + 3] & 1);
|
|
//write the ipl we want to send
|
|
exi[0 * 5 + 4] = val;
|
|
exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
|
|
while (exi[0 * 5 + 3] & 1);
|
|
exi[0] &= 0x405; //deselect IPL
|
|
}
|
|
|
|
#endif
|
|
|
|
static void decode_szp(void *src,void *dest)
|
|
{
|
|
u32 i,k,link;
|
|
u8 *dest8,*tmp;
|
|
u32 loff,coff,roff;
|
|
u32 size,cnt,cmask,bcnt;
|
|
yay0header *header;
|
|
|
|
dest8 = (u8*)dest;
|
|
header = (yay0header*)src;
|
|
size = header->dec_size;
|
|
loff = header->links_offset;
|
|
coff = header->chunks_offset;
|
|
|
|
roff = sizeof(yay0header);
|
|
cmask = 0;
|
|
cnt = 0;
|
|
bcnt = 0;
|
|
|
|
do {
|
|
if(!bcnt) {
|
|
cmask = *(u32*)(src+roff);
|
|
roff += 4;
|
|
bcnt = 32;
|
|
}
|
|
|
|
if(cmask&0x80000000) {
|
|
dest8[cnt++] = *(u8*)(src+coff);
|
|
coff++;
|
|
} else {
|
|
link = *(u16*)(src+loff);
|
|
loff += 2;
|
|
|
|
tmp = dest8+(cnt-(link&0x0fff)-1);
|
|
k = link>>12;
|
|
if(k==0) {
|
|
k = (*(u8*)(src+coff))+18;
|
|
coff++;
|
|
} else k += 2;
|
|
|
|
for(i=0;i<k;i++) {
|
|
dest8[cnt++] = tmp[i];
|
|
}
|
|
}
|
|
cmask <<= 1;
|
|
bcnt--;
|
|
} while(cnt<size);
|
|
}
|
|
|
|
static void expand_font(u8 *src,u8 *dest)
|
|
{
|
|
s32 cnt;
|
|
u32 idx;
|
|
u8 val1,val2;
|
|
sys_fontheader *sys_fontdata = fontHeader;
|
|
u8 *data = (u8*)sys_fontdata+44;
|
|
|
|
if(sys_fontdata->sheet_format==0x0000) {
|
|
cnt = (sys_fontdata->sheet_fullsize/2)-1;
|
|
|
|
while(cnt>=0) {
|
|
idx = _SHIFTR(src[cnt],6,2);
|
|
val1 = data[idx];
|
|
|
|
idx = _SHIFTR(src[cnt],4,2);
|
|
val2 = data[idx];
|
|
|
|
dest[(cnt<<1)+0] =((val1&0xf0)|(val2&0x0f));
|
|
|
|
idx = _SHIFTR(src[cnt],2,2);
|
|
val1 = data[idx];
|
|
|
|
idx = _SHIFTR(src[cnt],0,2);
|
|
val2 = data[idx];
|
|
|
|
dest[(cnt<<1)+1] =((val1&0xf0)|(val2&0x0f));
|
|
|
|
cnt--;
|
|
}
|
|
}
|
|
DCStoreRange(dest,sys_fontdata->sheet_fullsize);
|
|
}
|
|
|
|
static void GetFontTexel(s32 c,void *image,s32 pos,s32 stride)
|
|
{
|
|
u32 sheets,rem;
|
|
u32 xoff,yoff;
|
|
u32 xpos,ypos;
|
|
u8 *img_start;
|
|
u8 *ptr1,*ptr2;
|
|
sys_fontheader *sys_fontdata = fontHeader;
|
|
|
|
if(c<sys_fontdata->first_char || c>sys_fontdata->last_char) c = sys_fontdata->inval_char;
|
|
else c -= sys_fontdata->first_char;
|
|
|
|
sheets = sys_fontdata->sheet_column*sys_fontdata->sheet_row;
|
|
rem = c%sheets;
|
|
sheets = c/sheets;
|
|
xoff = (rem%sys_fontdata->sheet_column)*sys_fontdata->cell_width;
|
|
yoff = (rem/sys_fontdata->sheet_column)*sys_fontdata->cell_height;
|
|
img_start = fontImage+(sys_fontdata->sheet_size*sheets);
|
|
|
|
ypos = 0;
|
|
while(ypos<sys_fontdata->cell_height) {
|
|
xpos = 0;
|
|
while(xpos<sys_fontdata->cell_width) {
|
|
ptr1 = img_start+(((sys_fontdata->sheet_width/8)<<5)*((ypos+yoff)/8));
|
|
ptr1 = ptr1+(((xpos+xoff)/8)<<5);
|
|
ptr1 = ptr1+(((ypos+yoff)%8)<<2);
|
|
ptr1 = ptr1+(((xpos+xoff)%8)/2);
|
|
|
|
ptr2 = image+((ypos/8)*(((stride<<1)/8)<<5));
|
|
ptr2 = ptr2+(((xpos+pos)/8)<<5);
|
|
ptr2 = ptr2+(((xpos+pos)%8)/2);
|
|
ptr2 = ptr2+((ypos%8)<<2);
|
|
|
|
*ptr2 = *ptr1;
|
|
|
|
xpos += 2;
|
|
}
|
|
ypos++;
|
|
}
|
|
}
|
|
|
|
static void DrawChar(unsigned char c, int xpos, int ypos, int size, GXColor color)
|
|
{
|
|
/* reintialize texture object */
|
|
GXTexObj texobj;
|
|
GX_InitTexObj(&texobj, fontTexture, fontHeader->cell_width, fontHeader->cell_height, GX_TF_I4, GX_CLAMP, GX_CLAMP, GX_FALSE);
|
|
GX_LoadTexObj(&texobj, GX_TEXMAP0);
|
|
|
|
/* reinitialize font texture data */
|
|
memset(fontTexture,0,fontHeader->cell_width * fontHeader->cell_height / 2);
|
|
GetFontTexel(c,fontTexture,0,fontHeader->cell_width/2);
|
|
DCFlushRange(fontTexture, fontHeader->cell_width * fontHeader->cell_height / 2);
|
|
GX_InvalidateTexAll();
|
|
|
|
/* adjust texture width */
|
|
s32 width = (fontHeader->cell_width * size) / fontHeader->cell_height;
|
|
|
|
/* GX rendering */
|
|
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
|
|
GX_Position2s16(xpos, ypos - size);
|
|
GX_Color4u8(color.r, color.g, color.b, 0xff);
|
|
GX_TexCoord2f32(0.0, 0.0);
|
|
GX_Position2s16(xpos + width, ypos - size);
|
|
GX_Color4u8(color.r, color.g, color.b, 0xff);
|
|
GX_TexCoord2f32(1.0, 0.0);
|
|
GX_Position2s16(xpos + width, ypos);
|
|
GX_Color4u8(color.r, color.g, color.b, 0xff);
|
|
GX_TexCoord2f32(1.0, 1.0);
|
|
GX_Position2s16(xpos, ypos);
|
|
GX_Color4u8(color.r, color.g, color.b, 0xff);
|
|
GX_TexCoord2f32(0.0, 1.0);
|
|
GX_End();
|
|
GX_DrawDone();
|
|
}
|
|
|
|
/****************************************************************************
|
|
* IPL font support
|
|
*
|
|
****************************************************************************/
|
|
extern void __SYS_ReadROM(void *buf,u32 len,u32 offset);
|
|
|
|
int FONT_Init(void)
|
|
{
|
|
#ifndef HW_RVL
|
|
/* --- Game Cube --- disable Qoob before accessing IPL */
|
|
ipl_set_config(6);
|
|
#endif
|
|
|
|
/* read IPL font (ASCII) from Mask ROM */
|
|
ipl_fontarea = memalign(32,131360);
|
|
if (!ipl_fontarea)
|
|
return 0;
|
|
memset(ipl_fontarea,0,131360);
|
|
__SYS_ReadROM(ipl_fontarea+119072,12288,0x1FCF00);
|
|
|
|
/* YAY0 decompression */
|
|
decode_szp(ipl_fontarea+119072,ipl_fontarea);
|
|
|
|
/* retrieve IPL font data */
|
|
fontHeader = (sys_fontheader*)ipl_fontarea;
|
|
fontImage = (u8*)((((u32)ipl_fontarea+fontHeader->sheet_image)+31)&~31);
|
|
|
|
/* expand to I4 format */
|
|
expand_font((u8*)ipl_fontarea+fontHeader->sheet_image,fontImage);
|
|
|
|
/* character width table */
|
|
int i,c;
|
|
for (i=0; i<256; ++i)
|
|
{
|
|
if ((i < fontHeader->first_char) || (i > fontHeader->last_char))
|
|
c = fontHeader->inval_char;
|
|
else
|
|
c = i - fontHeader->first_char;
|
|
|
|
font_size[i] = ((u8*)fontHeader)[fontHeader->width_table + c];
|
|
}
|
|
|
|
/* font height */
|
|
fheight = fontHeader->cell_height;
|
|
|
|
/* initialize texture data */
|
|
fontTexture = memalign(32, fontHeader->cell_width * fontHeader->cell_height / 2);
|
|
if (!fontTexture)
|
|
{
|
|
free(ipl_fontarea);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void FONT_Shutdown(void)
|
|
{
|
|
if (fontHeader)
|
|
free(ipl_fontarea);
|
|
if (fontTexture)
|
|
free(fontTexture);
|
|
}
|
|
|
|
int FONT_write(char *string, int size, int x, int y, int max_width, GXColor color)
|
|
{
|
|
x -= (vmode->fbWidth / 2);
|
|
y -= (vmode->efbHeight / 2);
|
|
int w, ox = x;
|
|
|
|
while (*string && (*string != '\n'))
|
|
{
|
|
w = (font_size[(u8)*string] * size) / fheight;
|
|
if ((x + w) > (ox + max_width)) return strlen(string);
|
|
DrawChar(*string, x, y, size,color);
|
|
x += w;
|
|
string++;
|
|
}
|
|
|
|
if (*string == '\n')
|
|
{
|
|
string++;
|
|
return FONT_write(string, size, ox + (vmode->fbWidth / 2), y + size + (vmode->efbHeight / 2), max_width, color);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int FONT_writeCenter(char *string, int size, int x1, int x2, int y, GXColor color)
|
|
{
|
|
int i=0;
|
|
int w = 0;
|
|
while (string[i] && (string[i] != '\n'))
|
|
{
|
|
w += (font_size[(u8)string[i++]] * size) / fheight;
|
|
}
|
|
|
|
if ((x1 + w) > x2) w = x2 - x1;
|
|
int x = x1 + (x2 - x1 - w - vmode->fbWidth) / 2;
|
|
y -= (vmode->efbHeight / 2);
|
|
x2 -= (vmode->fbWidth / 2);
|
|
|
|
while (*string && (*string != '\n'))
|
|
{
|
|
w = (font_size[(u8)*string] * size) / fheight;
|
|
if ((x + w) > x2) return strlen(string);
|
|
DrawChar(*string, x, y, size,color);
|
|
x += w;
|
|
string++;
|
|
}
|
|
|
|
if (*string == '\n')
|
|
{
|
|
string++;
|
|
return FONT_writeCenter(string, size, x1, x2 + (vmode->fbWidth / 2), y + size + (vmode->efbHeight / 2), color);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int FONT_alignRight(char *string, int size, int x, int y, GXColor color)
|
|
{
|
|
int i;
|
|
int w = 0;
|
|
|
|
x -= (vmode->fbWidth / 2);
|
|
y -= (vmode->efbHeight / 2);
|
|
|
|
int ox = x;
|
|
|
|
for (i=0; i<strlen(string); i++)
|
|
{
|
|
w += (font_size[(u8)string[i]] * size) / fheight;
|
|
}
|
|
|
|
x = ox - w;
|
|
|
|
while (*string)
|
|
{
|
|
w = (font_size[(u8)*string] * size) / fheight;
|
|
if ((x + w) > ox) return strlen(string);
|
|
DrawChar(*string, x, y, size,color);
|
|
x += w;
|
|
string++;
|
|
}
|
|
return 0;
|
|
}
|